Mariya Peykova

Mariya Peykova

Year of Call: 2013
Email Address: [email protected]
Telephone: 0330 332 2633

How to use the Shortlist tool?

Clerk Details

  • Clerk Name: David Fielder
  • Clerk Telephone: 020 7583 8055
  • Clerk Email: [email protected]


Commercial litigation barrister Mariya Peykova appears for, and advises, businesses and individuals on all contractual matters from shareholder disputes to specific performance and general breach of contact. She has also advised on contractual disputes involving the interpretation of insurance policies and general terms and conditions arising in the travel industry during the Covid-19 pandemic and on business interruption insurance claims.

Mariya also has experience advising on matters where there are assets which are likely to be dissipated, and using emergency freezing injunctions to protect clients’ interests. She has a particular interest in the relationship between business and human rights, and can advise on the protection of business and commercial interests through international human rights proceedings.

Recent and Ongoing cases

  • Phones 4U Limited v. EE Limited & Ors [2021] EWCA Civ 116: Mariya was instructed by Mischon de Reya acting for Telefonica to assist in a junior capacity assisting in relation to proceedings brought by Phones 4U Limited (In administration) alleging conspiracy between EE, Vodafone, Telefonica and their parent companies (at the relevant time).
  • Advised on a complex breach of contract, which involved a side discrimination claim, against a large UK energy provider.
  • Represented a leading UK University in a breach of contract claim brought against the University by a former student. The claim was struck out following a contested application to strike out the statement of case.
  • Obtained an order for summary judgment against multiple defendants for breaches of several key obligations arising under a loan agreement and related guarantee.
  • Represented a former member of the Liberal Democrats at a contested hearing following an application for an interim injunction. The Applicant alleged, inter alia, that her expulsion from the Party constituted a breach of contract, as it breached several core principles enshrined in the Party’s constitution (Josephine Hayes v Mark Pack and Ors [2022] EWHC Civ).
  • Obtained a second order for relief from sanctions in circumstances in which relief had already been granted in relation to the same failure by the Applicant to file evidence in accordance with the court’s directions.
  • Secured a freezing injunction against the assets of an individual who was at the time outside the jurisdiction.
  • Advising on alternative methods of service outside the jurisdiction, particularly in cases where the Defendant is based in a State that is not a signatory to the Hague Convention.
  • Represented the tenant and guarantor in a commercial lease dispute with the corporate landlord. The defendants argued that the lease had been surrendered on the grounds of repudiatory breach.


Mariya has specific expertise working in the growing field of information law; she has particular experience in matters involving controversial subject access requests and more recently internet de-listing disputes.

Examples of recent cases:

  • Advising on a challenge against the Information Commissioner’s decision not to advise a large tech company to remove sensitive and potentially misleading search results linked to the Applicant.
  • Advising on an appeal against a decision of the Information Commissioner to allow late reliance by a public body on the exemption under section 12 of the Freedom of Information Act
  • Advising on a request for removal/deletion of personal data of a minor in circumstances in which it is unclear whether the organisation in question still needs the data for the original reason was collected.


Mariya has a keen interest in Energy Law and the interplay between local (national) pressures and international law. Her academic background as Research Fellow at Queen Mary University, working on energy law projects, enables her to advise clients on contractual and human rights matters arising in this growing sector.

At QMUL, Mariya worked mainly on the WiseGrid project sponsored by the European Commission. This focused on the legal implications of the gradual ‘smartening’ of the energy market across various EU Member States. Also, exploring the various ways in which individual states can modernise their existing energy supply infrastructures to make way for a more sustainable, smarter and ‘greener’ energy supply infrastructure. The project was led by Professor Rafael Leal-Arcas, and the team’s research in the field has been published in Europe and various academic journals in the United States.



  • Articles
    • Assessing the Value of Claims for Breaches of the GDPR

      This article was first published in ThoughtLeaders4 Disputes Magazine.

      View Article
    • Arbitration agreements “subject to contract”, and the limited scope of the separability principle (DHL Project & Chartering Ltd v Gemini Ocean Shipping Co Ltd [2022] EWCA Civ 1555)

      Mariya analyses the case DHL Project & Chartering Ltd v Gemini Ocean Shipping Co Ltd [2022] EWCA Civ 1555)  in relation to the "separability principle" in arbitration agreements.

      View Article
    • The correct measure of damages in a claim for breach of warranty and deceit in the context of a share sale

      Mariya Peykova analyses the case of MDW Holdings Limited v James Robert Norvill and Ors [2022] EWCA Civ 883, in which the Court of Appeal brings important clarification of the principles applicable to the assessment of damages for breach of warranty and deceit in the context of a share sale.

      View Article
    • Are we exclusive? High Court reviews key contractual principles in the context of ‘casual’ commercial relationships

      Zymurgorium Ltd v Hammonds of Knutsford plc

      Mariya Peykova has analysed the case of Zymurgorium Ltd v Hammonds of Knutsford plc for Lexis®PSL.

      View Article
    • The principle of ‘no reflective loss’ following the decision of the Supreme Court in Sevilleja v Marex Financial

      The principle of ‘no reflective loss’ following the decision of the Supreme Court in Sevilleja v Marex Financial: an analysis by Marc Brittain and Mariya Peykova.

      View Article
    • Insolvency in times of coronavirus: a short, practical guide for businesses and insolvency practitioners

      Mariya Peykova authors this practical guide for businesses and insolvency practitioners and looks at the proposed and existing measures introduced by the government to help businesses during the coronavirus crisis.

      View Article
    • The power of the Construction Industry and Training Board to impose levies under the Industrial Training Act 1982

      3PB Commercial Barrister Marc Brittain and Pupil Barrister Mariya Peykova consider the conditions under which employers in the construction industry should have to pay a levy for the purpose of meeting the expenses of an industrial training board.

      View Article
    • Dealing with Competing Jurisdiction Clauses: What is your Centre of Gravity?

      Dealing with Competing Jurisdiction Clauses: What is your Centre of Gravity?
      Marc Brittain and Mariya Peykova consider complex commercial arrangements and the difficulties they can create for parties where their obligations are set out in a multitude of related contracts of a single contract containing inconsistent dispute resolution clauses. Marc and Mariya explore the most common scenarios in which courts are asked to interpret inconsistent dispute resolution clauses, with particular focus on the ‘centre of gravity’ approach, adopted by courts.

      View Article
    • The legal position in relation to holidaymaker claims during the Coronavirus pandemic

      3PB’s pupil barrister Mariya Peykova reviews the legal position in relation to holidaymaker claims during the Coronavirus pandemic.

      Recent reports in the media suggest that some holidaymakers who have requested refunds have instead been offered credit notes, or deferred bookings. Mariya highlights the options available if holiday plans have been disrupted because of Covid-19, including package holidays, cancelled flights, accommodation and or other travel arrangements, insurance claims, and consumer credit rights.

      View Article
View Full CV